Proposed kinetic mechanism of biodiesel production through lipase catalysed interesterification with a methyl acetate acyl acceptor and ionic liquid [BMIM][PF6] co-solvent

2010 ◽  
Vol 89 (1) ◽  
pp. 166-170 ◽  
Author(s):  
Nicholas Ivan Ruzich ◽  
Amarjeet S. Bassi
Keyword(s):  
Ionic Liquid ◽  
Methyl Acetate ◽  
Kinetic Mechanism ◽  
Biodiesel Production ◽  
Acyl Acceptor

scholarly journals Lipase-catalyzed biodiesel synthesis with different acyl acceptors

2008 ◽  
pp. 161-169 ◽  
Author(s):  
Nevena Ognjanovic ◽  
Svetlana Saponjic ◽  
Dejan Bezbradica ◽  
Zorica Knezevic
Keyword(s):  
Diesel Engine ◽  
Low Temperature ◽  
Methyl Acetate ◽  
Immobilized Enzyme ◽  
Biodiesel Production ◽  
Acyl Acceptor ◽  
Alkaline Catalyst ◽  
Biodiesel Synthesis ◽  
Negative Effect ◽  
Acyl Acceptors

Biodiesel is an alternative fuel for diesel engine that is environmentally acceptable. Conventionally, biodiesel is produced by transesterification of triglycerides and short alcohols in the presence of an acid or an alkaline catalyst. There are several problems associated with this kind of production that can be resolved by using lipase as the biocatalyst. The aim of the present work was to investigate novel acyl acceptors for biodiesel production. 2-Propanol and n-butanol have a less negative effect on lipase stability, and they also improve low temperature properties of the fuel. However, excess alcohol leads to inactivation of the enzyme, and glycerol, a major byproduct, can block the immobilized enzyme, resulting in low enzymatic activity. This problem was solved by using methyl acetate as acyl acceptor. Triacetylglycerol is produced instead of glycerol, and it has no negative effect on the activity of the lipase.

Lipase-Catalyzed Biodiesel Production with Methyl Acetate as Acyl Acceptor

2008 ◽  
Vol 63 (3-4) ◽  
pp. 297-302 ◽  
Author(s):  
Ying Huang ◽  
Yunjun Yan
Keyword(s):  
Methyl Ester ◽  
Enzymatic Activity ◽  
Soybean Oil ◽  
Cotton Seed ◽  
Large Scale ◽  
Methyl Acetate ◽  
Seed Oil ◽  
Biodiesel Production ◽  
Acyl Acceptor ◽  
Cotton Seed Oil

Biodiesel is an alternative diesel fuel made from renewable biological resources. During the process of biodiesel production, lipase-catalyzed transesterification is a crucial step. However, current techniques using methanol as acyl acceptor have lower enzymatic activity; this limits the application of such techniques in large-scale biodiesel production. Furthermore, the lipid feedstock of currently available techniques is limited. In this paper, the technique of lipase-catalyzed transesterification of five different oils for biodiesel production with methyl acetate as acyl acceptor was investigated, and the transesterification reaction conditions were optimized. The operation stability of lipase under the obtained optimal conditions was further examined. The results showed that under optimal transesterification conditions, both plant oils and animal fats led to high yields of methyl ester: cotton-seed oil, 98%; rapeseed oil, 95%; soybean oil, 91%; tea-seed oil, 92%; and lard, 95%. Crude and refined cottonseed oil or lard made no significant difference in yields of methyl ester. No loss of enzymatic activity was detected for lipase after being repeatedly used for 40 cycles (ca. 800 h), which indicates that the operational stability of lipase was fairly good under these conditions. Our results suggest that cotton-seed oil, rape-seed oil and lard might substitute soybean oil as suitable lipid feedstock for biodiesel production. Our results also show that our technique is fit for various lipid feedstocks both from plants and animals, and presents a very promising way for the large-scale biodiesel production

A Review on Biodiesel Production by Transesterification Catalyzed by Ionic Liquid Catalysts

2016 ◽  
Vol 20 (7) ◽  
pp. 752-760 ◽  
Author(s):  
Pingbo Zhang ◽  
Hui Liu ◽  
Mingming Fan ◽  
Yanlei Liu ◽  
Jianglei Huang
Keyword(s):  
Ionic Liquid ◽  
Biodiesel Production

Biodiesel production by transesterification catalyzed by an efficient choline ionic liquid catalyst

2013 ◽  
Vol 108 ◽  
pp. 333-339 ◽  
Author(s):  
Mingming Fan ◽  
Jianglei Huang ◽  
Jing Yang ◽  
Pingbo Zhang
Keyword(s):  
Ionic Liquid ◽  
Biodiesel Production

Biodiesel production from waste cooking oil by acidic ionic liquid as a catalyst

2015 ◽  
Vol 77 ◽  
pp. 521-526 ◽  
Author(s):  
Zahoor Ullah ◽  
Mohamad Azmi Bustam ◽  
Zakaria Man
Keyword(s):  
Ionic Liquid ◽  
Waste Cooking Oil ◽  
Biodiesel Production ◽  
Cooking Oil ◽  
Acidic Ionic Liquid

scholarly journals Box-Behnken Design for Optimization on Biodiesel Production from Palm Oil and Methyl Acetate using Ultrasound Assisted Interesterification Method

2021 ◽  
Author(s):  
Mahfud Mahfud ◽  
Ansori Ansori
Keyword(s):  
Palm Oil ◽  
Energy Demand ◽  
Alternative Energy ◽  
Methyl Acetate ◽  
Catalyst Concentration ◽  
Separation Process ◽  
Operating Conditions ◽  
Biodiesel Production ◽  
Molar Ratio ◽  
Box Behnken Design

Energy demand is currently increasing in line with technological and economic developments, but not accompanied by an increase in energy reserves. So we need another alternative energy that can be renewed, namely biodiesel. Biodiesel has been produced commercially through the transesterification from vegetable oil with methanol using catalyst that produces esters and glycerol. The formation of glycerol which is by-product can reduce its economic value, so it needs to be done the separation process. Therefore, a new route is proposed in this study, namely the interesterification reaction (non-alcoholic route) using methyl acetate as an alkyl group supplier and potassium methoxide catalyst. The superiority of the product produced by the interesterification reaction is biodiesel with triacetin byproducts which have an economical value and can be added to biodiesel formulations because of their solubility so that no side product separation process is needed. To increase the yield of biodiesel and the interesterification rate, the ultrasound method was used in this study. To optimize the factors that affect the interesterification reaction (molar ratio of methyl acetate to oil, catalyst concentration, temperature, and interesterification time), the Box-Behnken design (BBD) is used. Optimal operating conditions to produce the yields of biodiesel of 98.64 % are at molar ratio of methyl acetate to palm oil of 18.74, catalyst concentration of 1.24 %, temperature of 57.84 °C, and interesterification time of 12.69 minutes.

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